S355J2 Steel (Material 1.0577)
S355J2 steel (1.0577) is a quality grade of S355 steel, which is one of the non-alloy structural steels commonly used in Europe. According to EN 10025-2: Hot rolled products of structural steels, S355 steel is divided into 4 quality grades, namely:
- S355JR (1.0045),
- S355J0 (1.0553),
- S355J2 (1.0577), former names: S355J2G3 and S355J2G4 in EN 10025:1990,
- S355K2 (1.0596), previous names: S355K2G3 and S355K2G4 in EN 10025:1990.
EN 10025 S355J2 equivalent ASTM A992/A992M; Australian AS/NZS 3678: Grade 350 L20; Canadian G40.20/G40.21: 350WT (55WT); Chinese GB/T 1591: Q355D; and Indian standard IS 2062: E350.
EN 10025 S355J2 Meaning
S355J2 Meaning: “S” stands for “Structural steel”; 355 indicates that the material has a minimum yield strength of 355 MPa when the nominal thickness is ≤ 16mm; and “J2” indicates that the material has a minimum impact energy of 27J at -20°C (-4 °F).
S355J2 Steel Properties
S355J2 steel properties are listed in the datasheet below, including chemical composition, physical and mechanical properties, etc.
Chemical Composition
Chemical composition based on heat analysis.
| Chemical Composition, % (≤) |
| Standard | Steel (Material Number) | C | Si | Mn | P | S | Cu | N | Method of deoxidation |
| EN 10025-2 | S355J2 (1.0577) | 0.20 | 0.55 | 1.60 | 0.025 | 0.025 | 0.55 | – | Fully killed |
Note: For carbon content (C) and nominal thickness (t)
- C ≤ 0.20 % when t ≤ 16mm,
- C ≤ 0.22 % when t > 30 mm,
- C by agreement when sections with nominal thickness > 100 mm.
- For long products the P and S content can be 0.005 % higher.
| Chemical Composition (Product Analysis), % (≤) |
| Standard | Steel (Material Number) | C | Si | Mn | P | S | Cu | N | Method of deoxidation |
| EN 10025-2 | S355J2 (1.0577) | 0.23 | 0.6 | 1.70 | 0.035 | 0.035 | 0.60 | – | Fully killed |
Note: For carbon content (C) and nominal thickness (t)
- C ≤ 0.23 % when t ≤ 16mm,
- C ≤ 0.24 % when t > 30 mm,
- C by agreement when sections with nominal thickness > 100 mm.
- For long products the P and S content can be 0.005 % higher.
Mechanical Properties
S355J2 mechanical properties at room temperature are listed in the datasheet below, including tensile strength, yield strength, and elongation, etc.
| Yield Strength, Mpa, ≥ |
| Steel Grade (Steel Number) | t≤16 | 16< t ≤40 | 40< t ≤63 | 63< t ≤80 | 80< t ≤100 | 100< t ≤150 | 150< t ≤200 | 200< t ≤250 | 250< t ≤400 |
| S355J2 (1.0577) | 355 | 345 | 335 | 325 | 315 | 295 | 285 | 275 | 265 |
| Tensile Strength, Mpa, ≥ |
| Steel Grade (Material Number) | t<3 | 3 ≤ t ≤ 100 | 100 < t ≤400 |
| S355J2 (1.0577) | 510-680 | 470-630 | 450-600 |
Note:
- 1 MPa = 1 N/mm2
- t = Nominal Thickness (mm)
Physical Properties
- Density: 7.85 g/cm3 (0.284 lb/in3)
- Melting point: 1450-1530 °C (2640-2800 °F)
Elongation After Fracture
Minimum percentage elongation after fracture
| Elongation after fracture (%, ≥), L0 = 80 mm |
| ≤1 | 1< t ≤1.5 | 1.5< t ≤ 2 | 2< t ≤ 2.5 | 2.5< t < 3 | Orientation of test pieces |
| 14 | 15 | 16 | 17 | 18 | Parallel |
| 12 | 13 | 14 | 15 | 16 | Transverse |
| Elongation after fracture (%, ≥), L0 = 5.65 √So |
| 3≤t≤40 | 40< t ≤63 | 63 < t ≤100 | 100 < t ≤ 150 | 150 < t ≤ 400 | Orientation of test pieces |
| 22 | 21 | 20 | 18 | 17 | Parallel |
| 20 | 19 | 18 | 18 | 17 | Transverse |
Material S355J2 Equivalent Steel Grades
S355J2 steel equivalent materials are listed below, including ASTM, German DIN, ISO, Australian, Canadian, Chinese and Indian IS standard, etc.
| S355J2 Steel Equivalent Material |
| European Union | USA | Germany | ISO | Australia | Canada | China | Indian |
| Standard | Grade (Material Number) | Standard & Grade | Grade | Standard | Grade | Standard | Grade | Standard | Grade | Standard | Grade, SI (Imperial) | Standard | Grade | Standard | Grade |
| EN 10025-2 | S355J2 (1.0577);
S355J2G3 | ASTM A992/A992M;
ASTM A572/A572M | A572 Grade 50 [345];
A992 | DIN 17100 | St 52-3N | ISO 630-2 | S355D | AS/NZS 3678 | Grade 350 L20 | G40.20/G40.21 | 350WT (55WT) | GB/T 1591 | Q345D;
Q355D | IS 2062 | E350
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